On Sun, Nov 20, 2016 at 02:52:33PM +0100, Pali Rohár wrote: > Because igmpproxy is based on mrouted originally licensed under Stanford > and later relicensed under BSD, I would consider it DFSG compliant...
For what is worth, my point of view follows: In general, when a program is relicensed, the new license is not applied automatically to forks and derivative versions. Imagine that I make a GPL program that the igmpproxy developers modify and include into igmpproxy. I later relicense my code to a license incompatible with the GPL; igmpproxy won't automatically switch to the new license unless everyone agree (and probably will never happen because they are fine with the GPL version). If the new license of mrouted is better, we can expect that all developers and contributors will be happy to switch, but it must be done by them, nobody else can switch the license in their behalf unless they give permission. According to the source repository of igmpproxy, it is stil using the Standford license.
